"""
map用法
<map object at 0x0000000002263BC8>
map(func, *iterables) --> map object
"""
a = [1, 2, 3, 4, 5]


def func(x):
    return x * x


a = map(func, [])
print(a)

b = map(lambda i: i * i, [1, 2, 3])
print(list(b))
